Mike looked incredibly dapper in a grey suit and top hat, while his wife looked absolutely gorgeous in a baby blue dress, which featured a sheer mid-section. Zara's fascinator stole the show, with the daughter of Princess Anne wearing a stylish one in a cream colour.
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Meanwhile, Beatrice, 36, stunned in a plaid ensemble, while mum Sarah, 65, wore a naval blue outside that featured lacy sleeves. She topped off the look with a matching fascinator that carried a mesh net.
Zara and Mike regularly attend Royal Ascot and they looked so glam at the annual event.
Zara wore a pale blue shirt dress by Rebecca Vallance with lace panelling and a Sarah Cant hat, while Mike looked smart in a grey three-piece suit with a blue tie and a black top hat.
King Charles and Queen Camilla led the carriage procession. They were joined in their carriage by Saudi royal Prince Faisal bin Salman Al Saud and Lady Sarah Keswick.
As Zara Phillips turned 45 on the day of her husband's charity golf tournament, Mike spoke exclusively about her support, his children's sportiness and how his father is coping with Parkinson's Disease